\documentclass[border=2px]{standalone}

\usepackage[braket, qm]{qcircuit}
\usepackage{graphicx}

\begin{document}
\scalebox{1.0}{
\Qcircuit @C=1.0em @R=1.0em @!R { \\
	 	\nghost{{q}_{0} :  } & \lstick{{q}_{0} :  } & \multigate{2}{\mathrm{iqp:[[6\,5\,3];\,[5\,4\,5];\,[3\,5\,1]]}}_<<<{0} & \gate{\mathrm{Unitary}} & \qw & \qw\\
	 	\nghost{{q}_{1} :  } & \lstick{{q}_{1} :  } & \ghost{\mathrm{iqp:[[6\,5\,3];\,[5\,4\,5];\,[3\,5\,1]]}}_<<<{1} & \multigate{1}{\mathrm{Hamiltonian}}_<<<{0} & \qw & \qw\\
	 	\nghost{{q}_{2} :  } & \lstick{{q}_{2} :  } & \ghost{\mathrm{iqp:[[6\,5\,3];\,[5\,4\,5];\,[3\,5\,1]]}}_<<<{2} & \ghost{\mathrm{Hamiltonian}}_<<<{1} & \qw & \qw\\
	 	\nghost{{q}_{3} :  } & \lstick{{q}_{3} :  } & \multigate{2}{|\psi\rangle\,(\mathrm{0.25\jmath,0.3536,0.25+0.25\jmath,0,...})}_<<<{0} & \multigate{1}{\mathrm{Isometry}}_<<<{0} & \qw & \qw\\
	 	\nghost{{q}_{4} :  } & \lstick{{q}_{4} :  } & \ghost{|\psi\rangle\,(\mathrm{0.25\jmath,0.3536,0.25+0.25\jmath,0,...})}_<<<{1} & \ghost{\mathrm{Isometry}}_<<<{1} & \qw & \qw\\
	 	\nghost{{q}_{5} :  } & \lstick{{q}_{5} :  } & \ghost{|\psi\rangle\,(\mathrm{0.25\jmath,0.3536,0.25+0.25\jmath,0,...})}_<<<{2} & \qw & \qw & \qw\\
\\ }}
\end{document}